Re: [mdnsext] Discussion of BoF during Berlin IETF
Michael Richardson <mcr+ietf@sandelman.ca> Wed, 05 June 2013 13:43 UTC
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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: "Albrecht, Harald" <harald.albrecht@siemens.com>
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Date: Wed, 05 Jun 2013 09:42:48 -0400
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Subject: Re: [mdnsext] Discussion of BoF during Berlin IETF
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>>>>> "Albrecht," == Albrecht, Harald <harald.albrecht@siemens.com> writes: >> -----Ursprüngliche Nachricht----- >> Von: mdnsext-bounces@ietf.org [mailto:mdnsext-bounces@ietf.org] Im >> Auftrag von Michael Richardson >> Gesendet: Dienstag, 4. Juni 2013 15:46 >> An: mdnsext@ietf.org >> Betreff: Re: [mdnsext] Discussion of BoF during Berlin IETF >> I think that they are very different, and I think that we need to leave the >> door open to that commercial enterprise networks might be ruled out of >> bounds for mDNS. That is, it might be that all that we wind up with is a way >> to signal that mDNS is *not* to be used on a particular >> network. I do not believe that we have many operators of such networks >> at IETF meetings to represent their point of view. (I think about the >> operators of the government networks near me... they have many >> conflicting requirements, but few clues as to how to put them together) Albrecht> My understanding of the ongoing discussion so far is, that Albrecht> the charter is not focusing solely on mDNS as the Albrecht> underlying technology only, but with a somewhat broader Albrecht> scope of service discovery; thus, also including DNS for Albrecht> those scenarios (use cases) where an IT infrastructure is Albrecht> present. At least to some extent. My impression was that Albrecht> the (pending?) renaming of the upcoming WG reflects this Albrecht> situation. Or did I misunderstand this? Yes, it's true that going to infrastructure DNS is useful. But, that doesn't prevent or clearly signal, that mDNS may be *unwelcome* on a particular network. Enterprise folks might want to do that. I'm not claiming that they will, or should, succeed, btw. I'm pointing out that we don't know what they want, because they don't tend to participate. >> It's not that mDNS and global >> DNS *services* or even protocols have difficulties co-existing. They do >> that just fine. It is a question of them *interacting*. The place >> where they interact is on the *host*. Albrecht> How true, that's where the devil is in the details. mDNS Albrecht> uses UTF-8 encoding on the wire and DNS uses (at least for Albrecht> host domain names) ASCII/IDNA-2008. Throw in different Albrecht> resolver libs and IDNA support and you are ready for an Albrecht> instant recipe disaster. It might be that some vendor find they have to greenfield things. My preference would be to stub out the libc stub resolver, and force all resolution to 127.0.0.1 (::1), and do all the rest. That's already the case for some systems, but it has failed to become an architectural norm. -- ] Never tell me the odds! | ipv6 mesh networks [ ] Michael Richardson, Sandelman Software Works | network architect [ ] mcr@sandelman.ca http://www.sandelman.ca/ | ruby on rails [
- [mdnsext] Discussion of BoF during Berlin IETF Ralph Droms
- Re: [mdnsext] Discussion of BoF during Berlin IETF Ralph Droms
- Re: [mdnsext] Discussion of BoF during Berlin IETF peter van der Stok
- Re: [mdnsext] Discussion of BoF during Berlin IETF Daniel Park
- Re: [mdnsext] Discussion of BoF during Berlin IETF Ralph Droms
- Re: [mdnsext] Discussion of BoF during Berlin IETF Brzozowski, John
- Re: [mdnsext] Discussion of BoF during Berlin IETF Brzozowski, John
- Re: [mdnsext] Discussion of BoF during Berlin IETF Scott Herscher
- Re: [mdnsext] Discussion of BoF during Berlin IETF peter van der Stok
- Re: [mdnsext] Discussion of BoF during Berlin IETF Albrecht, Harald
- Re: [mdnsext] Discussion of BoF during Berlin IETF Mark Townsley
- Re: [mdnsext] Discussion of BoF during Berlin IETF Kerry Lynn
- Re: [mdnsext] Discussion of BoF during Berlin IETF Michael Sweet
- Re: [mdnsext] Discussion of BoF during Berlin IETF peter van der Stok
- Re: [mdnsext] Discussion of BoF during Berlin IETF Brzozowski, John
- Re: [mdnsext] Discussion of BoF during Berlin IETF Brzozowski, John
- Re: [mdnsext] Discussion of BoF during Berlin IETF Michael Richardson
- Re: [mdnsext] Discussion of BoF during Berlin IETF Albrecht, Harald
- Re: [mdnsext] Discussion of BoF during Berlin IETF Michael Richardson
- Re: [mdnsext] Discussion of BoF during Berlin IETF Kerry Lynn
- Re: [mdnsext] Discussion of BoF during Berlin IETF David Farmer
- Re: [mdnsext] Discussion of BoF during Berlin IETF Kerry Lynn
- Re: [mdnsext] Discussion of BoF during Berlin IETF David Farmer
- Re: [mdnsext] Discussion of BoF during Berlin IETF Michael Richardson
- Re: [mdnsext] Discussion of BoF during Berlin IETF Kerry Lynn
- Re: [mdnsext] Discussion of BoF during Berlin IETF Albrecht, Harald
- Re: [mdnsext] Discussion of BoF during Berlin IETF Michael Sweet
- Re: [mdnsext] Discussion of BoF during Berlin IETF Albrecht, Harald
- Re: [mdnsext] Discussion of BoF during Berlin IETF David Farmer
- Re: [mdnsext] Discussion of BoF during Berlin IETF Michael Sweet
- Re: [mdnsext] Discussion of BoF during Berlin IETF Michael Richardson
- Re: [mdnsext] Discussion of BoF during Berlin IETF Kerry Lynn
- Re: [mdnsext] Discussion of BoF during Berlin IETF Michael Richardson